Description:

The main objective of this work was the construction of a turbine and three collection devices and wind acceleration which pointed out that as the relative length of the device and diameter in the throat increases, the power in the wind turbine RJ -300 which was used blade profile NACA 4415 also increased. a study of the behavior of the vents at different speeds will be made for the trend of change of variable speed and pressure along each shaped diffuser in SolidWorks and simulated in SolidWorks Flow Simulation to this study it was found that as the speed increase pressure decay .Also a pilot study with the wind turbine RJ-300 and the collection devices and wind acceleration took place. The devices used were the diffuser type "Wind lend". The work was developed in three stages: first were made simulations of the trend of change of speed vs pressure through nozzles, then diffusers and wind turbine was built, followed by their corresponding tests in the wind tunnel of the university National Engineering. The turbine used in this study consisted of three blades, with the radius of 0.50 m which were used in the wind tunnel. In the numerical simulations and tests in the wind tunnel approach speed of various wind between 5.7 and 13.5 m / s. Based on the geometry of the turbine scheme "Wind Lens", found in Figure 8 of reference [8] of bibliography of this project they were built three diffusers. The results of the tests in the wind tunnel showed that the power is increased as Lt / Rt (diffuser length / diameter of the throat of the diffuser) ratio increased. In tests performed in the wind tunnel was verified increase in electrical power extracted for devices constructed: the maximum power increase was 112% compared to the power of the turbine without diffuser at a speed of 9 m / s. In Ci, CII and CIII diffusers increases were 10.99%, 44.32% and 85.77% respectively compared to the turbine without diffuser and the speed of 13 m / s at the entrance of the test chamber wind tunnel National University of Engineering.